Does the IDCS and ITP keysets have headset jacks? What about the wireless phones do they at least have a 2.5mm headset jack?
Neither the IDCS or the ITP Phones have a dedicated headset jack.
The WIP 5000M wireless phone does have a 2.5mm socket.
At the price you buy them, you are lucky handset cords are included so you don't have to go down to Radio Shack for an install.
Just kidding, trying to freak out the people who complain about me kicking Samsung in the crotch.